The following procedures will help you to determine whether your reporting installation is properly configured:

Centreon configuration: Hostgroups, Host Categories and Services Categories must be present in your Centreon configuration. More precisely,
a host has to be linked to at least one hostgroup and one host category. The host’s services also have to be added to a service category.
For more details, visit the page groups and categories configuration.

ETL configuration: Check here to ensure that the ETL configuration is correct.